Water hardness in Sesto Fiorentino
38 °fH very hard
Tap water in Sesto Fiorentino is very hard: 38 °fH (380 mg/L · 22.2 gpg · 21.3 °dH).
Source: Publiacqua - Qualità dell acqua per comune (2026) · data checked 2026-10-29
Publiacqua, the utility serving Sesto Fiorentino, reports a hardness of 380 mg/L CaCO₃ (38 °f) on its 2026 water quality page for the municipality. That is very hard water. Scale on taps, kettles and boilers builds up quickly, and the source does not say how the value varies between districts.
Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
Water data
| Total hardness | 38 °fH |
|---|---|
| ca_mg_l | 120 |
| mg_mg_l | 19 |
| Utility | Publiacqua SpA |
How Sesto Fiorentino compares
- Tap water in Sesto Fiorentino is 79 % harder than the median of the 629 cities we track in Italy (21.2 °fH).
- By hardness it ranks 27 of 629 in Italy (1 = hardest); 96 % of these cities have softer water.
- In Toscana it is number 1 of 9 cities; the regional median is 23 °fH.
- Nearest city with clearly softer water: Campi Bisenzio, 6 km away (27 °fH).
Ranking of the hardest and softest water in Italy →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Sesto Fiorentino
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 21 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Sesto Fiorentino water hard or soft?
It is very hard: 380 mg/L as CaCO₃ (22.2 gpg, 21.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sesto Fiorentino safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Italian utilities report °f (French degrees); D.Lgs. 31/2001 recommends 15–50 °f.
How many grains per gallon is Sesto Fiorentino water?
22.2 gpg, equal to 21.3 °dH, 38 °fH or 380 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sesto Fiorentino?
For 380 mg/L (21.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Sesto Fiorentino?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Publiacqua - Qualità dell acqua per comune (2026). Method: figure published by the water supplier. Publiacqua - Qualità dell acqua per comune · Outdated figure? Tell us